ether-oxygen to the stereogenic quaternary carbon center of the oxirane ring had a profound influence on the enantioselectivity, and several oxiranes were resolved with good to excellent selectivities. The enantiomerically enriched epoxides and vicinal diols thus obtained contain a useful “synthetic handle” in their side chain, which allows their use as buildingblocks in asymmetric synthesis.
[EN] COMPOUNDS THAT INHIBIT MCL-1 PROTEIN<br/>[FR] COMPOSÉS INHIBANT LA PROTÉINE MCL-1
申请人:AMGEN INC
公开号:WO2017147410A1
公开(公告)日:2017-08-31
Provided herein are myeloid cell leukemia 1 protein (Mcl-1) inhibitors, methods of their preparation, related pharmaceutical compositions, and methods of using the same. For example, provided herein are compounds of Formula I, and pharmaceutically acceptable salts thereof and pharmaceutical compositions containing the compounds. The compounds and compositions provided herein may be used, for example, in the treatment of diseases or conditions, such as cancer.
[EN] MACROCYCLIC MCL-1 INHIBITORS AND METHODS OF USE<br/>[FR] INHIBITEURS DE MCL-1 MACROCYCLIQUE ET PROCÉDÉS D'UTILISATION
申请人:ABBVIE INC
公开号:WO2019035927A1
公开(公告)日:2019-02-21
The present disclosure provides for compounds of Formula (I) wherein A2, A3, A4, A6, A7, A8, A15, RA, R5, R9, R10A, R10B, R11, R12, R13, R14, R16, W, X, and Y have any of the values defined in the specification, and pharmaceutically acceptable salts thereof, that are useful as agents in the treatment of diseases and conditions, including cancer. Also provided are pharmaceutical compositions comprising compounds of Formula (I).
作者:Jan Breitenfeld、Jesus Ruiz、Matthew D. Wodrich、Xile Hu
DOI:10.1021/ja4051923
日期:2013.8.14
nickel-based catalysts have been reported for cross-coupling reactions of nonactivated alkyl halides. The mechanistic understanding of these reactions is still primitive. Here we report a mechanistic study of alkyl-alkyl Kumada coupling catalyzed by a preformed nickel(II) pincer complex ([(N2N)Ni-Cl]). The coupling proceeds through a radical process, involving two nickel centers for the oxidative addition of alkyl
许多镍基催化剂已被报道用于非活化烷基卤化物的交叉偶联反应。对这些反应的机理理解仍然很原始。在这里,我们报告了由预先形成的镍 (II) 钳形配合物 ([(N2N)Ni-Cl]) 催化的烷基-烷基 Kumada 偶联的机理研究。偶联通过自由基过程进行,涉及两个用于烷基卤氧化加成的镍中心。催化作用在格氏试剂中为二级,在催化剂中为一级,在卤代烷中为零级。一种瞬态物质,[(N2N)Ni-烷基(2)](烷基(2)-MgCl),被确定为负责卤代烷活化的关键中间体,其形成是转换的决定步骤催化。
Chemoselective Alkene Hydrosilylation Catalyzed by Nickel Pincer Complexes
作者:Ivan Buslov、Jeanne Becouse、Simona Mazza、Mickael Montandon‐Clerc、Xile Hu
DOI:10.1002/anie.201507829
日期:2015.11.23
Chemoselective hydrosilylation of functionalized alkenes is difficult to achieve using base‐metal catalysts. Reported herein is that well‐defined bis(amino)amide nickel pincer complexes are efficient catalysts for anti‐Markovnikov hydrosilylation of terminal alkenes with turnover frequencies of up to 83 000 per hour and turnover numbers of up to 10 000. Alkenes containing amino, ester, amido, ketone